ISO INTERNATIONAL STANDARD 4788 Second edition 2005-05-01 Laboratory glassware Graduated measuring cylinders Verrerie de laboratoire Eprouvettes graduées cylindriques Reference number ISO 4788:2005(E) @ ISO 2005 ISO 4788:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The Iso Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2005 - All rights reserved ISO 4788:2005(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through IsO technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committeehasbeen non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the IsO/lEc Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 4788 was prepared by Technical Committee ISO/TC 48, Laboratory glassware and related apparatus Subcommittee Sc 6, Laboratory and volumetric ware. This second edition cancels and replaces the first edition (isO 4788:1980), which has been technically revised to incorporate the following changes: b) two classes of accuracy have been introduced; cylinders of squat form have been added; d) marking of cylinders has been changed; e) capacity at lowest graduation line for 5 ml and 10 ml cylinders has been increased. zalion'ghtsreserved ili ISO 4788:2005(E) Introduction The first edition of this International Standard (IsO 4788:1980) was originally written when the use of More recently, with the increasing demand for accreditation and changing uses to which measuring cylinders are put, a significant demand has emerged worldwide for a more accurate class to complement the originally specified range. Also, with more work being carried out in laminar-flow cabinets, glove boxes and fume extraction hoods, in This International Standard addresses these two needs, and has been prepared to meet the requirements of ISO 384. This International Standard includes a) spouted measuring cylinders of traditional (tall) form, accuracy classes A and B, b) stoppered measuring cylinders of traditional (tall) form, accuracy classes A and B, and c) spouted measuring cylinders of squat form, accuracy class B. Class A has been considered f